Gurobi 5.0.1 (linux64) logging started Wed Apr 24 00:58:57 2013

Optimize a model with 440 rows, 16040 columns and 32040 nonzeros
Presolve time: 0.02s
Presolved: 440 rows, 16040 columns, 32040 nonzeros
Variable types: 16000 continuous, 40 integer (40 binary)

Root relaxation: objective 4.551993e+04, 848 iterations, 0.02 seconds

    Nodes    |    Current Node    |     Objective Bounds      |     Work
 Expl Unexpl |  Obj  Depth IntInf | Incumbent    BestBd   Gap | It/Node Time

     0     0 45519.9310    0    4          - 45519.9310     -      -    0s
H    0     0                    45998.000000 45519.9310  1.04%     -    0s
H    0     0                    45669.000000 45519.9310  0.33%     -    0s
     0     0 45656.7869    0    1 45669.0000 45656.7869  0.03%     -    0s
     0     0 45659.5758    0    3 45669.0000 45659.5758  0.02%     -    0s
     0     0 45659.5758    0    4 45669.0000 45659.5758  0.02%     -    0s
     0     0 45659.5758    0    1 45669.0000 45659.5758  0.02%     -    0s
     0     0 45659.5758    0    3 45669.0000 45659.5758  0.02%     -    0s
     0     0 45668.1715    0    2 45669.0000 45668.1715  0.00%     -    0s

Cutting planes:
  Implied bound: 60
  Flow cover: 2

Explored 0 nodes (1470 simplex iterations) in 0.21 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.566900000000e+04, best bound 4.566817148362e+04, gap 0.0018%